Show:
Greatest Common Factor
Rules of Divisibility
Prime Factorization
Factors
Word Problems
100
The GCF of 16 and 40
What is 8
100
Must be an even number ending in a 0,2,4,6 or 8.
What is the 2 Rule of Divisibility
100

22x3x5

What is 60

100
List the factors for 6
What is 1, 2, 3 and 6
100

Amy received a shipment of 14 boxes of pencils. Each box contains 45 pencils. How many pencils did she receive?

She received 630 pencils.

200
The GCF of 12 and 8
What is 4
200
The number must have a 0 in the ones place
What is the 10 Rule of Divisibility
200

The prime factorization of 20

What is 22x5

200
List the factors of 12
What is 1,2,3,4,6 and 12
200

Amy received a shipment of 2025 pencils. The shipment had 27 boxes. How many pencils are in each box?

There are 75 pencils in each box.

300
The GCF of 6 and 13
What is 1
300
The number must have a 0 or 5 in the ones place
What is the 5 Rule of Divisibility
300

The prime factorization of 25

What is 52

300
List the factors of 24
What is 1,2,3,4,6,8,12 and 24
300

287 students are having lunch in the cafeteria. Each table seats 12 people. How many tables are needed for all the student to have a seat?

There needs to be 24 tables to seat all the students.

400
The GCF of 21 and 49
What is 7
400

The numbers 24 is divisible by (2, 3, 5, 10)

What is 2 and 3

400

23x32

What is the prime factorization of 72

400
List the factors of 36
What is 1,2,3,4,6,9,12,18 and 36
400

In 8-12 grade, there are 249 students. In 4-7 grade, there are three times as many students. How many students are there in 4-12 grade?

There are 996 students in total.

500
The GCF of 72 and 90
What is 9
500

The rule of divisibility for 3

What is add up the digits and check if the sum is divisible by 3

500

32 x11

What is the prime factorization of 99

500
List out the factors of 72
What is 1,2,3,4,6,8,9,12,18,24,36 and 72.
500

Classroom 2 has 23 students. Classroom 4 has twice as many as Classroom 2. Classroom 7 has three times as many as Classroom 4. How many students are there in all three classrooms?

There are 207 students altogether.